mirror of
https://github.com/vivier/EMILE.git
synced 2024-12-22 10:29:31 +00:00
302 lines
6.5 KiB
C
302 lines
6.5 KiB
C
/*
|
|
*
|
|
* (c) 2004-2007 Laurent Vivier <Laurent@lvivier.info>
|
|
*
|
|
*/
|
|
|
|
#define __NO_INLINE__
|
|
|
|
#include <stdio.h>
|
|
#include <malloc.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
#include <sys/types.h>
|
|
|
|
#include <macos/types.h>
|
|
#include <macos/gestalt.h>
|
|
|
|
#include "bank.h"
|
|
#include "memory.h"
|
|
#if defined(ARCH_M68K)
|
|
#if defined(__LINUX__)
|
|
#include "bootinfo.h"
|
|
#elif defined(__NETBSD__)
|
|
#include "bootenv.h"
|
|
#endif
|
|
#endif
|
|
#ifdef ARCH_PPC
|
|
#include "bootx.h"
|
|
#include "switch_to_PPC.h"
|
|
extern u_int32_t _bootstrap_start;
|
|
extern u_int32_t _bootstrap_end;
|
|
#endif
|
|
#include "arch.h"
|
|
#include "misc.h"
|
|
#include "load.h"
|
|
#include "console.h"
|
|
#include "vga.h"
|
|
#include "driver.h"
|
|
#include "config.h"
|
|
#include "serial.h"
|
|
|
|
#include "enter_kernel.h"
|
|
|
|
#ifdef ARCH_M68K
|
|
#define KERNEL_ALIGN (256L * 1024L) // Kernel alignment, on 256K boundary
|
|
#if defined(__LINUX__)
|
|
#define BI_ALLOC_SIZE (4096L) // Allocate 4K for bootinfo
|
|
#elif defined(__NETBSD__)
|
|
#define BI_ALLOC_SIZE (4096L)
|
|
#endif
|
|
#endif
|
|
|
|
|
|
int start(emile_l2_header_t* info)
|
|
{
|
|
char *kernel;
|
|
char *loader;
|
|
#ifdef ARCH_M68K
|
|
entry_t entry;
|
|
unsigned long physImage;
|
|
#ifdef USE_MMU
|
|
unsigned long physical;
|
|
#ifdef __LINUX__
|
|
unsigned long aligned_size;
|
|
unsigned long aligned_addr;
|
|
#endif /* __LINUX__ */
|
|
#endif /* USE_MMU */
|
|
int ret;
|
|
#endif /* ARCH_M68K */
|
|
unsigned long start_mem;
|
|
unsigned long entry_point;
|
|
int bootstrap_size;
|
|
char *ramdisk_start;
|
|
unsigned long kernel_size;
|
|
unsigned long ramdisk_size;
|
|
emile_config_t econfig;
|
|
|
|
serial_init();
|
|
console_init();
|
|
arch_init();
|
|
init_memory_map();
|
|
#ifdef BANK_DUMP
|
|
bank_dump();
|
|
#endif
|
|
enter_kernel_init();
|
|
|
|
memset(&econfig, 0, sizeof(econfig));
|
|
|
|
retry:
|
|
if (econfig.kernel != NULL)
|
|
free(econfig.kernel);
|
|
if (econfig.command_line != NULL)
|
|
free(econfig.command_line);
|
|
if (econfig.initrd != NULL)
|
|
free(econfig.initrd);
|
|
if (econfig.chainloader != NULL)
|
|
free(econfig.chainloader);
|
|
|
|
if (read_config(info, &econfig) != 0)
|
|
error("cannot read configuration\n");
|
|
if (econfig.chainloader)
|
|
{
|
|
loader = load_chainloader(econfig.chainloader);
|
|
}
|
|
|
|
#ifdef ARCH_M68K
|
|
if (arch_type == gestalt68k)
|
|
{
|
|
#if defined(__LINUX__)
|
|
/* and BI_ALLOC_SIZE for bootinfo */
|
|
|
|
bootstrap_size = BI_ALLOC_SIZE +
|
|
end_enter_kernel - enter_kernel;
|
|
#elif defined(__NETBSD__)
|
|
bootstrap_size = BI_ALLOC_SIZE +
|
|
end_enter_kernel - enter_kernel;
|
|
#endif
|
|
}
|
|
else
|
|
error("EMILE doesn't support your architecture");
|
|
#endif
|
|
#ifdef ARCH_PPC
|
|
if (arch_type == gestaltPowerPC)
|
|
{
|
|
bootstrap_size = end_enter_kernel - enter_kernel;
|
|
}
|
|
else
|
|
error("EMILE doesn't support your architecture");
|
|
#endif
|
|
|
|
/* load kernel */
|
|
|
|
kernel = load_kernel(econfig.kernel,
|
|
bootstrap_size,
|
|
&start_mem, &entry_point, &kernel_size);
|
|
if (kernel == NULL)
|
|
{
|
|
printf("Cannot load and uncompress kernel image\n");
|
|
printf("Press any key");
|
|
console_keypressed(0);
|
|
goto retry;
|
|
}
|
|
|
|
/* load ramdisk if needed */
|
|
|
|
if (econfig.initrd)
|
|
{
|
|
ramdisk_start = load_ramdisk(econfig.initrd, &ramdisk_size);
|
|
if (ramdisk_start == NULL)
|
|
{
|
|
if (kernel != NULL)
|
|
free(kernel);
|
|
printf("Cannot open ramdisk\n");
|
|
printf("Press any key");
|
|
console_keypressed(0);
|
|
goto retry;
|
|
}
|
|
}
|
|
else
|
|
ramdisk_start = 0;
|
|
|
|
#ifdef ARCH_M68K
|
|
if (arch_type == gestalt68k)
|
|
{
|
|
unsigned long enter_size = end_enter_kernel - enter_kernel;
|
|
|
|
/* copy enter_kernel at end of kernel */
|
|
|
|
memcpy((char*)kernel +
|
|
kernel_size + bootstrap_size - enter_size,
|
|
(char*)enter_kernel, enter_size);
|
|
|
|
end_enter_kernel = (unsigned long)kernel +
|
|
kernel_size + bootstrap_size;
|
|
enter_kernel = (unsigned long)kernel +
|
|
bootstrap_size - enter_size + kernel_size;
|
|
|
|
/* compute final address of kernel */
|
|
|
|
if (mmu_type == gestaltNoMMU)
|
|
{
|
|
unsigned long size = end_enter_kernel - enter_kernel;
|
|
|
|
#if defined(__LINUX__)
|
|
/* initialize bootinfo structure */
|
|
|
|
bootinfo_init(econfig.command_line,
|
|
ramdisk_start, ramdisk_size);
|
|
|
|
/* set bootinfo at end of kernel image */
|
|
|
|
set_kernel_bootinfo(kernel + kernel_size);
|
|
|
|
physImage = (unsigned long)kernel;
|
|
#endif
|
|
entry = (entry_t)(start_mem - size);
|
|
|
|
memcpy(entry, (char*)enter_kernel, size);
|
|
} else
|
|
#ifndef USE_MMU
|
|
error("Unsupported MMU");
|
|
#else
|
|
{
|
|
ret = logical2physical((unsigned long)kernel, &physImage);
|
|
|
|
/* disable and flush cache */
|
|
|
|
disable_cache();
|
|
|
|
#if defined(__LINUX__)
|
|
/* initialize bootinfo structure */
|
|
|
|
bootinfo_init(econfig.command_line,
|
|
ramdisk_start, ramdisk_size);
|
|
|
|
/* add KERNEL_ALIGN if we have to align */
|
|
|
|
aligned_size = boot_info.memory[0].addr & (KERNEL_ALIGN - 1);
|
|
if ( aligned_size > 0 )
|
|
{
|
|
aligned_size = KERNEL_ALIGN - aligned_size;
|
|
aligned_addr = boot_info.memory[0].addr + aligned_size;
|
|
aligned_size = boot_info.memory[0].size - aligned_size;
|
|
boot_info.memory[0].addr = aligned_addr;
|
|
boot_info.memory[0].size = aligned_size;
|
|
}
|
|
|
|
/* set bootinfo at end of kernel image */
|
|
|
|
set_kernel_bootinfo(kernel + kernel_size);
|
|
|
|
#elif defined(__NETBSD__)
|
|
bootenv_init(kernel + kernel_size);
|
|
#endif
|
|
|
|
ret = logical2physical(enter_kernel, &physical);
|
|
entry = (entry_t)physical;
|
|
|
|
if ( (ret == 0) && (enter_kernel != (unsigned long)entry) )
|
|
{
|
|
unsigned long logi;
|
|
unsigned long size = end_enter_kernel - enter_kernel;
|
|
|
|
logi = vga_get_video();
|
|
ret = logical2physical(logi, &physical);
|
|
entry = (entry_t)physical;
|
|
|
|
memcpy((char*)logi, (char*)enter_kernel, size);
|
|
memcpy((char*)entry, (char*)enter_kernel, size);
|
|
}
|
|
}
|
|
#endif /* USE_MMU */
|
|
}
|
|
else
|
|
#ifndef ARCH_PPC
|
|
error("EMILE doesn't support your architecture");
|
|
#endif
|
|
#endif /* ARCH_M68K */
|
|
#ifdef ARCH_PPC
|
|
if (arch_type == gestaltPowerPC)
|
|
{
|
|
PPCRegisterList regs;
|
|
|
|
bootx_init(econfig.command_line, ramdisk_start, ramdisk_size);
|
|
|
|
regs.PC = (u_int32_t)&_bootstrap_start;
|
|
|
|
#define BOOT_KERNEL_STACK_SIZE 65536
|
|
regs.GPR[1] = (u_int32_t)malloc_contiguous(BOOT_KERNEL_STACK_SIZE) + BOOT_KERNEL_STACK_SIZE - 512;
|
|
regs.GPR[2] = 1;
|
|
regs.GPR[3] = 'BooX';
|
|
regs.GPR[4] = (u_int32_t)&bootx_infos;
|
|
regs.GPR[5] = 0;
|
|
regs.GPR[6] = (int)&_bootstrap_start;
|
|
regs.GPR[7] = 0; // where bootstrap must be copied;
|
|
regs.GPR[8] = ((((&_bootstrap_end - &_bootstrap_start) + 4095) << 12) >> 12);
|
|
regs.GPR[9] = 0; //boot_map_addr;
|
|
regs.GPR[10] = (u_int32_t)kernel;
|
|
regs.GPR[11] = 0;
|
|
|
|
switch_to_PPC(®s);
|
|
}
|
|
else
|
|
error("EMILE doesn't support your architecture");
|
|
#endif
|
|
|
|
turn_off_interrupts();
|
|
|
|
asm("ori.w #0x0700,%sr");
|
|
|
|
/* kick off */
|
|
|
|
#ifdef ARCH_M68K
|
|
if (arch_type == gestalt68k)
|
|
entry(physImage, kernel_size + BI_ALLOC_SIZE, start_mem, entry_point);
|
|
#endif
|
|
|
|
error("Kernel startup failed");
|
|
|
|
return 0;
|
|
}
|